Old Westbury, New York Demographics & Population 2026
During the 2020–2024 ACS period, Old Westbury, New York had a total population of 4,241, the 396th largest village in New York, with a median household income of $250,000+, which is 191% higher than the state average. The poverty rate is 3.2%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 191% above the state average — one of the wealthiest communities in New York.
- An exceptionally low poverty rate of 3.2% — among the lowest in New York.
- 78.0% of adults hold a bachelor's degree or higher — top 10% in New York.
- Housing affordability is a challenge — homes cost 8.0x the median household income.
Old Westbury Quick Facts
How Old Westbury Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 4,320 | 4,241 | -1.8% |
| Median household income | $250,000+ | $250,000+ | +0.0% |
| Median home value | $2,000,000+ | $2,000,000+ | +0.0% |
How Old Westbury Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 65 | National average: 61
Education
Educational Attainment (Adults 25+)
Old Westbury Rankings in New York
Explore New York Rankings
Other Cities in Nassau County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Hempstead | 58,801 | $90,420 | 14.4% | $459,500 |
| Levittown | 51,904 | $146,068 | 4.7% | $590,500 |
| Freeport | 44,088 | $120,625 | 7.4% | $505,900 |
| Hicksville | 43,780 | $144,471 | 3.9% | $634,100 |
| Valley Stream | 40,315 | $133,190 | 5.5% | $616,100 |
| East Meadow | 36,821 | $133,971 | 6.4% | $631,800 |
| Elmont | 36,518 | $114,217 | 5.0% | $602,900 |
| Baldwin | 34,994 | $145,472 | 6.6% | $593,800 |
| Long Beach | 34,756 | $140,739 | 7.6% | $696,400 |
| Uniondale | 33,148 | $124,684 | 9.2% | $539,000 |
Cities Similar to Old Westbury
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Watchtower | 3,974 | N/A | N/A | 1.8% | 100.0% |
| Armonk | 4,429 | $230,357 | $1,073,300 | 77.0% | 6.3% |
| Setauket | 4,069 | $221,771 | $755,600 | 70.1% | 6.1% |
| Flower Hill | 4,803 | $250,000+ | $1,975,500 | 84.2% | 2.9% |
| Southampton | 4,621 | $214,032 | $2,000,000+ | 62.5% | 4.8% |
Population Overview
Old Westbury is a small community located in New York, within Nassau County. The total population is 4,241. It ranks as the 396th most populous out of 1,289 Census-designated places in New York.
Age Demographics
The median age in Old Westbury is 29.5 years. This is 26% lower than the state median of 39.8 years. Only 12.7% of residents are under 18, indicating fewer families with children.
Economy, Income & Housing
The median household income in Old Westbury is $250,000+. This is 191% higher than the state median of $85,974. It is also 210% higher than the national median of $80,734. The poverty rate stands at 3.2%. This is 77% lower than the state poverty rate of 14.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 5.1%. This is 19% lower than the state rate of 6.4%. The median home value is $2,000,000+. Housing costs are 372% higher than the state median of $423,800. The home-value-to-income ratio of 8.0x suggests that housing affordability is a significant concern for many residents. 92.5% of occupied housing units are owner-occupied. This homeownership rate is 70% higher than the state average of 54.4%.
Race & Ethnicity
The largest racial or ethnic group in Old Westbury is White (non-Hispanic), making up 73.4% of the population. Asian residents account for 13.4%. The Black or African American population (4.7%) is well below the state average of 13.4%. The Hispanic or Latino population (5.6%) is well below the state average of 19.8%.
Education
78.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Old Westbury in the top 10% of all cities in the state for educational attainment. This is 94% higher than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.2%. Notably, 40.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Old Westbury, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,289 Census-designated places in New York. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Old Westbury, New York?
Old Westbury, New York has a population of 4,241 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Old Westbury, NY?
The median household income in Old Westbury is $250,000+, which is 210% higher than the national median of $80,734.
What is the poverty rate in Old Westbury, NY?
The poverty rate in Old Westbury is 3.2%. This means approximately 105 residents live below the federal poverty line.
What is the racial makeup of Old Westbury, New York?
Old Westbury's population is 73.4% White, 4.7% Black, 5.6% Hispanic/Latino, and 13.4% Asian.
What is the median home value in Old Westbury, NY?
The median home value in Old Westbury is $2,000,000+. The home-value-to-income ratio is 8.0x.
How educated is Old Westbury, New York?
78.0% of adults (25+) in Old Westbury hold a bachelor's degree or higher, and 40.2% hold a graduate or professional degree.